You could start with a fundraiser at the field. Not sure if the school district would allow concert/dance fund raising effort at the field? Serving alcohol would probably be an issue, but to get an improved facility something might be arranged.
If the Phy-Ed. t-shirts sold so well I bet you could get a number of people to buy replica jerseys and hats for a town team. (Count me in, especially if you come up with a retro orange and black color scheme). Would there be any businesses in town that would support a team and sponsor signage on the park? I know that back in my fast pitch softball days it was a pain in the koester...I mean kiester to get money from already strapped businesses. How great it would be to come home for Sauerkraut Days and take in a ball game....maybe fireworks after the game?